He morris peters co



(No Model.)

W. H. PRENDERGAST.

' LUBRIUATOR.

Patentd Dec. 28,1897.

vv/w/vvvm Tag. 7 I

Invgnior $4 WlZne sacs.

UNiTEn STATES PATENT Enron.

WILLIAM H. PRENDERGAST, OF SAVANNAH, GEORGIA, ASSIGNOR OF ONE- HALF TO CHARLES D. KLINE.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 596,230, dated December 28, 1897.

Application filed. July 21, 1897. Serial No. 645,430. (No model.)

T0 at whom it may concern:

Be it known that 1, WILLIAM H. PRENDER- GAST, of Savannah, in the county of Ohatham, State of Georgia, have invented a new and useful Improvement in Lubricating Oil-Cups; and I do hereby declare that the following is a full, clear, and eXact description of the invention, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

Figure 1 represents a vertical section of oilcup, exposing equipment. Fig. 2 represents an elevation of valve. Fig. 3 represents plan of oil-cupwith equipment. Fig. 4 represents the plan of valve, cross-plate, and pointer. Fig. 5 represents the plan and elevation of cross-plate. Fig. Grepresents plan and elevation of the spring. Fig. 7 represents a vertical section of valve.

Similar letters and figures of reference indicate corresponding parts.

The object of this invention is to provide a lubricating appliance for machinery possessing an adjustable feed-valve that dispenses with the screw-valve, an unreliable instrument because of the stealthy wear of the threads.

Referring to the drawings, the letter a represents a cylindrical metallic cup, which in use has fitted thereon a cap for protecting the lubricant from dust. The base of cup at, which forms the valve-seat, is plane, with one depression-the port h, which port passes down and communicates with the oil-channel m in the center of the base of cup. Near the top of cup at, diametrically opposite, are two spuds M, which project out on the inner side for the purpose of holding the cross-plate c in place, and on the outer upper surface numbers are inscribed in reference to pointer 6, corresponding with the different feed-ports when covering port h.

The letter 1) represents the valve, composed of two parts-the valve-plate and the spindle. The valve-plate consists of a circular plate of metal one-quarter of an inch thick, ground so as to fit completely on plane of valve-seat. Equidistant from the center and from one another are feed-ports g, perforated in-this plate. In the drawings three only of these feed-ports are represented; but the invention admits of as many as the care of the workman will use. Each of these feed-ports is filled with soft metal f, reamed from the under side, so as to afford an unimpeded passage for the oil that passes the gaged orifice.

The letter 01 represents a spring that surrounds the valve-spindle b, resting on the valve-plate and pressing upward against the cross-plate c, which is fixed beneath the spuds This spring renders the contact between the valve-plate and valve-seat inaccessible to oil, thus leaving the ports the only avenue for the oil topass down the oil-channel.

The letter 0 represents the cross plate, which has two narrow transversely-running elevations on its upper face, one at each end. This plate fits over the upper end of the valvespindle by an aperture and holds the spring down on the valve-plate by fitting under the spuds i i.

Pointer e is inserted in the eye at the summit of the spindle and is used to indicate what feed-port is in use. When in use, the cup a is attached to the part to be lubricated. The valve 1) is then introduced into the cup by slightly canting same until it passes the spuds i '5, when it is lowered to set on valve-seat. Spring dis then inserted over the valve-spindle until it rests on the valve-seat, and cross-plate c is then fitted over spindle I), pressed down 011 spring d, and fastened under the spuds it, which spuds fit in the grooves in the ends of cross-plate. The pointer e is now inserted through the eye in the spindle, and thus equipped the oil-cup is ready for use. Oil is poured into the cup and the pointer is turned until the desired feed-port covers the port 72-, when lubrication will be accomplished. When the machine is unused, the valve may be turned so that the port it will be shut off, and thus a great saving in oil may be effected. Lubrication can be adjusted at any time by the use of the pointer 6, moving it over the mark that registers the feed-port desired.

Having thus described my invention, what- I claim, and desire to secure by Letters Patent, is as follows, to wit:

A cup at having a valve-seat as described in which is formed the port -h that leads to the oil-channel, the cup having at its top spuds spindle for the purpose of indicating when the 2' i; the valve 1) with the feed-ports g and the valve-spindle; the spring" (1 applied to the spindle to keep the Valve Well pressed on its seat cross-plate 0 arranged on the spindle to rest under spnds i 2' and compress the spring (Z; and the pointer e located upon the valvefeed-ports and port h are in alinement; as herein substantially described.

\V. H. PRENDERGAST. Witnesses:

J. Q. SAUSSY, J 1 FRANCE 1. SALA. 

